How about a train that leaves at 17:21?
Thast will work,I need you to book it for 2 people and a reference number please
train-arriveby train-day train-departure train-destination train-people
train-arriveby train-day train-departure train-destination train-people
train-arriveby train-day train-departure train-destination train-people
train-arriveby train-day train-departure train-destination train-people